Hi, Apple-Works kindly optimize your device.
1. From the home screen, swipe either up or down to access apps.
2. Tap Settings.
3. Select Battery and device care.
4. Tap Optimize now.
If the issue persists, please perform a soft reset of your device.
Press and hold the power and volume down buttons for about 10 seconds.
*The device may take a screenshot, however, keep holding the buttons for a few more seconds.
Hi, Apple-Works kindly do take your device for a Software reload. It seems like the current software loaded on your device is malfunctioning. Please go to the below link to locate the closest Authorized Service Center to you.
You can also backup using a Smart switch.
Install the program on your computer and connect your phone to your computer using an Original Samsung cable and follow the prompts.